package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

public class Demo3 {
    public static void main(String[] args) throws Exception {
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection= DriverManager.getConnection("jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true", "root", "root");
        System.out.println("与数据库建立连接！");
        Statement statement=connection.createStatement();
        /*
        UPDATE user
        SET password='666666',nickname='老三',age=33
        WHERE id=1;
         */
        String sql="UPDATE user " +
                "SET password='666666',nickname='老三',age=33 " +
                "WHERE id=1";
        int num=statement.executeUpdate(sql);
        if (num>0){
            System.out.println("更新完毕，影响了表中结构:"+num+"条");
        }else {
            System.out.println("更新失败！");
        }
        connection.close();
        }
    }

